<?php
if(!defined('BASEPATH')) exit('No direct script access allowed');

/*
 * CKEditor helper for CodeIgniter
 * 
 * @author Samuel Sanchez <samuel.sanchez.work@gmail.com> - http://kromack.com/
 * @package CodeIgniter
 * @license http://creativecommons.org/licenses/by-nc-sa/3.0/us/
 * @tutorial http://kromack.com/developpement-php/codeigniter/ckeditor-helper-for-codeigniter/
 * @see http://codeigniter.com/forums/viewthread/127374/
 * @version 2010-08-28
 * 
 */

/**
 * This function adds once the CKEditor's config vars
 * @author Samuel Sanchez 
 * @access private
 * @param array $data (default: array())
 * @return string
 */
function cke_initialize($data = array()) {

    $return = '';

    if(!defined('CI_CKEDITOR_HELPER_LOADED')) {

        define('CI_CKEDITOR_HELPER_LOADED', TRUE);
        $return =  '<script type="text/javascript" src="'.base_url(). $data['path'] . '/ckeditor.js"></script>';
        $return .=  "<script type=\"text/javascript\">CKEDITOR_BASEPATH = '" . base_url() . $data['path'] . "/';</script>";
    } 

    return $return;

}

/**
 * This function create JavaScript instances of CKEditor
 * @author Samuel Sanchez 
 * @access private
 * @param array $data (default: array())
 * @return string
 */
function cke_create_instance($data = array()) {

    $return = "<script type=\"text/javascript\">
        CKEDITOR.replace('" . $data['id'] . "', {";

            //Adding config values
            if(isset($data['config'])) {
                foreach($data['config'] as $k=>$v) {

                    // Support for extra config parameters
                    if (is_array($v)) {
                        $return .= $k . " : [";
                        $return .= config_data($v);
                        $return .= "]";

                    }
                    else {
                        $return .= $k . " : '" . $v . "'";
                    }

                    if($k !== end(array_keys($data['config']))) {
                        $return .= ",";
                    }                       
                } 
            }               

    $return .= '});</script>';  

    return $return;

}

/**
 * This function displays an instance of CKEditor inside a view
 * @author Samuel Sanchez 
 * @access public
 * @param array $data (default: array())
 * @return string
 */
function display_ckeditor($data = array())
{
    // Initialization
    $return = cke_initialize($data);

    // Creating a Ckeditor instance
    $return .= cke_create_instance($data);


    // Adding styles values
    if(isset($data['styles'])) {

        $return .= "<script type=\"text/javascript\">CKEDITOR.addStylesSet( 'my_styles_" . $data['id'] . "', [";


        foreach($data['styles'] as $k=>$v) {

            $return .= "{ name : '" . $k . "', element : '" . $v['element'] . "', styles : { ";

            if(isset($v['styles'])) {
                foreach($v['styles'] as $k2=>$v2) {

                    $return .= "'" . $k2 . "' : '" . $v2 . "'";

                    if($k2 !== end(array_keys($v['styles']))) {
                         $return .= ",";
                    }
                } 
            } 

            $return .= '} }';

            if($k !== end(array_keys($data['styles']))) {
                $return .= ',';
            }           


        } 

        $return .= ']);';

        $return .= "CKEDITOR.instances['" . $data['id'] . "'].config.stylesCombo_stylesSet = 'my_styles_" . $data['id'] . "';
        </script>";     
    }   

    return $return;
}

/**
 * config_data function.
 * This function look for extra config data
 *
 * @author ronan
 * @link http://kromack.com/developpement-php/codeigniter/ckeditor-helper-for-codeigniter/comment-page-5/#comment-545
 * @access public
 * @param array $data. (default: array())
 * @return String
 */
function config_data($data = array())
{
    $return = '';
    foreach ($data as $key)
    {
        if (is_array($key)) {
            $return .= "[";
            foreach ($key as $string) {
                $return .= "'" . $string . "'";
                if ($string != end(array_values($key))) $return .= ",";
            }
            $return .= "]";
        }
        else {
            $return .= "'".$key."'";
        }
        if ($key != end(array_values($data))) $return .= ",";

    }
    return $return;
}
